<template>
  <div>
    <div class="data">
      <div class="searchForm">
        <el-form :inline="true" :model="params" class="demo-form-inline">
          <el-form-item label="标题">
            <el-input
              v-model="params.title"
              placeholder="请输入内容"
              prefix-icon="el-icon-search"
              class="block"
            >
            </el-input>
          </el-form-item>
          <el-form-item>
            <el-button
              type="info"
              icon="el-icon-search"
              @click="getList(1)"
              class="block"
              >查询</el-button
            >
            <el-button type="primary" icon="el-icon-plus" @click="add"
              >增加</el-button
            >
            <el-button type="danger" icon="el-icon-delete" @click="removeMore"
              >批量删除</el-button
            >
          </el-form-item>
        </el-form>
      </div>
    </div>
    <div class="message">
      <div class="message1">
        <el-table
          :data="rows"
          stripe
          style="width: 100%"
          @selection-change="handleSelectionChange"
        >
          <el-table-column type="selection" width="55"></el-table-column>
          <el-table-column prop="img" label="图片">
            <template slot-scope="scope">
              <!-- {{scope.row.img}} -->
              <img style="max-width: 40px; max-height: 40px"
                v-if="scope.row.img"
                :src="scope.row.img"/>
            </template>
          </el-table-column>
          <el-table-column prop="title" label="标题"> </el-table-column>
          <el-table-column prop="url" label="跳转地址"> </el-table-column>
          <el-table-column prop="status" label="是否启用">
            <template slot-scope="scope">
              <el-switch
                v-model="scope.row.status"
                active-color="#13ce66"
                inactive-color="#ff4949"
                @change="statusChange(scope.row)"
                :active-value="1"
                :inactive-value="0"
              >
              </el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作">
            <template slot-scope="scope">
              <el-button
                type="primary"
                size="mini"
                icon="el-icon-edit"
                style="margin-right: 10px"
                @click="edit(scope.row)"
                >编辑</el-button
              >
              <el-popconfirm
                title="确定删除此数据？"
                @confirm="remove(scope.row)"
              >
                <el-button
                  slot="reference"
                  type="danger"
                  size="mini"
                  icon="el-icon-delete"
                  @click="remove"
                  >删除</el-button
                >
              </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
      </div>
    </div>
    <div class="pagination">
      <el-pagination
        @size-change="sizeChange"
        @current-change="getList"
        :current-page="params.pageNum"
        :page-sizes="[5, 10, 100, 200, 300, 400]"
        :page-size="params.pageSize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </div>
    <el-dialog :title="form._id ? '修改' : '新增'" :visible.sync="dialogFormVisible" width="400px">
      <el-form :model="form" ref="form" :rules="rules" label-width="100px">
        <el-form-item label="图片" prop="img">
          <el-input type="text" v-model="form.passWord"></el-input>
        </el-form-item>
        <el-form-item label="标题" prop="title">
          <el-input type="text" v-model="form.newPassWord"></el-input>
        </el-form-item>
        <el-form-item label="跳转地址" prop="url">
          <el-input type="text" v-model="form.reNewPassWord"></el-input>
        </el-form-item>
        <el-form-item label="类型" prop="type">
          <el-select v-model="form.type" placeholder="请选择">
            <el-option
              v-for="type in types"
              :key="type.values"
              :lable="type.label"
              :value="type.value"
            >
            </el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="submit">确 定</el-button>
      </div>
    </el-dialog>
    <BannerEdit @load="getList" ref="bannerEditer"></BannerEdit>
  </div>
</template>

<script>
export default {
  name: "shouyeBanner",
  components: {},
  data() {
    return {
      ///查询参数
      params: {
        type: "banner",
        title: "",
        pageNum: 1,
        pageSize: 10,
      },
      rows: [],
      total: 0,
      dialogFormVisible: false,
      form: {
        _id:0,
        img: "",
        title: "banner",
        url: "",
        type: "",
      },
      rules: {
        img: [{ required: true, message: "图片不能为空", trigger: "blur" }],
      },
      types: [
        { lable: "轮播图", value: "banner" },
        { lable: "分类区", value: "category" },
        { lable: "为你推荐", value: "recommend" },
      ],
      selecteds:[]
    };
  },
  methods: {
    getlist(pageNum) {
      if (pageNum) this.params.pageNum = pageNum;
      this.$http({
        url: "/admin/index",
        params: this.params,
      }).then(res => {
        this.total = res.total;
        this.rows = res.rows;
      });
    },
    ///启用停用
    statuChange(row){
        this.$http({
        url: "/admin/index",
        method:'PUT',
        data:{
          indexId:row._id,
          status:row.status
        }
      }).then(res => {
        if(res.errorMsg){
        this.dialogFormVisible = false
        this.getlist()          
        }
      });
    },
    ////修改pageSize
    sizeChange(pageSize) {
      this.params.pageSize = pageSize;
      this.getlist(1);
    },
    add() {
      ///初始化
      this.form = {
        _id:0,
        img: "",
        title: "banner",
        url: "",
        type: "",
      }
      this.dialogFormVisible = true;
    },
    edit(row){
      this.form = row
      this.dialogFormVisible = true;
    },
    ///删除数据
    remove(row){
      this.$http({
          url: "/admin/index",
          method: "DELETE",
          params:{indexId:row._id}
          }).then(res => {
            if (!res.errorMsg) {
              this.getlist(1);
            }
          })
    },
    handleSelectionChange(rows){
      ///存储选中数据
      this.selecteds = rows
    },
    //批量删除
    removeMore(){
      ///获取被选中的数据
      let checkedRowsPrmose = []
      let success = [],fail = []
      for(let i = 0; i < this.selecteds.length; i++){
        checkedRowsPrmose.push(
          new Promise(resovle => {
            let row = this.selecteds[i]
            this.$http({
              url:'/admin/index',
              method:'DELETE',
              params:{indexId:row._id}
            }).then(res => {
              if(!res.errorMsg){
                success.push(row._id)
              }else{
                fail.push(row._id)
              }
              resovle()
            })
          })
        )
      }
      this.$confirm('此操作将删除选中的数据, 是否继续?', '提示',{
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
      ///删除
            Promise.all(checkedRowsPrmose).then(() => {
              this.$message({
                message: `批量删除完成，成功删除${success.length}条数据，删除失败${fail.length}条数据`,
                duration:3000
              });
              this.getlist(1)
            })
      })      
    },
    submit() {
      this.$refs.form.validate(valid => {
        if (valid) {
          this.$http({
            url: "/admin/index",
            method:this.form.indexId ? 'PUT' : 'POST',///通过indexId判断新增还是修改
            data: this.form
          }).then(res => {
            if (!res.errorMsg) {
              this.dialogFormVisible = false
              this.getlist(this.form.indexId ? undefined : 1)
            }
          });
        }
      });
    },
    ////修改pageNum
    // currentChange(pageNum){
    //     this.params.pageNum = pageNum
    //     this.getlist()
    // }
  },
  created() {
    this.getlist();
  },
  mounted() {},
};
</script>

<style scoped>
.data {
  width: 98%;
  height: 50px;
  background-color: #ffffff;
  margin-top: 30px;
  margin-left: 1%;
}
.searchForm {
  position: absolute;
  margin-top: 5px;
  margin-left: 10px;
}
.message {
  margin-top: 10px;
  width: 98%;
  margin-left: 1%;
}
.pagination {
  margin-top: 5px;
  margin-left: 10px;
}
</style>